There are 200 different alien species in this movie. Luc Besson wrote a 600 page book describing in details all the species. The actors had to read that book prior to filming so they can adjust their acting depending on the species they were interacting with.

The two first trailers use the song "Because" by the Beatles. It is the very first time a film director could obtain the rights for using a Beatles song in a movie advertisement. Permission was granted by Paul McCartney.

With a final production budget of EUR197.47 million, around $210 million in United States currency, the film is officially the most expensive ever made in France, significantly exceeding the budget of the previous record holder, Asterix at the Olympic Games (2008), which cost EUR102 million ($113 million). Twenty years earlier, director Luc Besson made The Fifth Element (1997), which was the most expensive French movie at the time with a budget of EUR90 million ($100 million).

There are 2734 special effect shots in this movie compared to "only" 188 in 'The Fifth Element (1997)' ("See you in space" featurette).

The Welcoming Captains are all directors and/or writers Luc Besson has worked with.

The film is based on the French science fiction comics series Valérian and Laureline, written by Pierre Christin and illustrated by Jean-Claude Mézières.

Luc Besson chose not to shoot the movie in 3D because 3D cameras are too heavy for his style of filming like running behind an actor or unusual angles of filming.

At one point, Igon Siruss tells Valerian, "I will find you and I will kill you." To which Valerian whispers, "Good luck." This is nearly identical to the now iconic exchange from Taken, which was also written by Luc Besson.

Released in 2017, the year of Valerian's 50th anniversary.

When Valerian is in Big Market and a wanted notice is released, the bounty hunter that follows Valerian is at a bar named "Korben", Korben Dallas is the name of the character Bruce Willis plays in Luc Besson's "The Fifth Element".

Luc Besson deliberately chose to shoot the film, an adaptation of a French comic, in English with English-speaking actors in order to raise its chances of a wider audience.

The futuristic New York City in Luc Besson's previous film The Fifth Element (1997) was visually inspired by "The Circles of Power", the fifteenth volume in the "Valérian and Laureline" comic series.

Luc Besson first premiered some footage at the 2016 San Diego Comic-Con. This footage received a standing ovation from the crowd in Hall H.

After suffering a record loss of $135 million in the previous year, EuropaCorp had set its hopes on Valerian to turn in a much-needed profit. However, after the commercial failure of the film and a subsequent drop in company stocks of over 40%, deputy CEO Edouard de Vesinne was forced to step down from his position.

During the "Welcoming"-scenes in the beginning, one Alien species being greeted are the "Mondoshawan", known from the film "The Fifth Element".

The main storyline is loosely based on "Ambassador of the Shadows", the sixth album in the comic book series. This was also the first Valerian story to be translated in English.

The opening scene begins in 1975. This is the year "Ambassador of the Shadows" (on which the film is loosely based) was first published in French.

Rihanna's character Bubble offers Valerian the poetry of Verlaine or Rimbaud, then quotes a line from Paul Verlaine's poem 'A Poor Young Shepherd'- "I'm afraid of a kiss, like the kiss of a bee."

Director Luc Besson waived his own salary in order to get this film made, which was a life-long passion project of his.

The film opens with footage of the 1975 joint US/Soviet mission Apollo Soyuz Test Project. The mission ran from July 15, 1975 through July 24, 1975, 42 years to the week of the opening of this film.

Weta Digital and ILM (Industrial Light & Magic) have previously worked together on Contact (1997), Van Helsing (2004), Eragon (2006) and Avatar (2009), making Valérian and the City of a Thousand Planets their fifth collaboration.

Before the Big Market mission Lauriline tells the commanding operative "Nice hat" which is a subtle nod to "The Fifth Element" Where Corbin Dallas tells a would be mugger the same thing.

Rutger Hauer receives top billing (credited as "and Rutger Hauer" in the opening credits) despite having less than one minute of screen time. Director Luc Besson asked him to be in the film as an homage to Blade Runner (1982) and its director, Ridley Scott, who is a friend of Besson.

Cara Delevingne worked out for several months to get in shape for her role as Laureline.

Cara Delevingne announced on social media that filming began on January 4, 2016.

Dane DeHaan and Cara Delevingne also co-star in Tulip Fever (2017).

When Valerian is being propositioned by prostitutes one of them is dressed like Jessica Rabbit, and says "my hero."

The film ends with the male and female protagonist making love inside a capsule, which is also how Luc Besson's The Fifth Element (1997) ended. The Fifth Element, in turn, was heavily influenced by the look of the 'Valerian' comics, on which this film is based.

During the opening sequence, it is possible to see a Mondoshawan (5th Element) arriving at the station